/* css/estilos-neutros.css */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: #f8fafc;
    color: #0f172a;
    line-height: 1.5;
    padding: 2.5rem 1rem 4rem 1rem;
}

.contenedor-principal {
    max-width: 760px;
    margin: 0 auto;
}

/* Área de Logo */
.logo-area {
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.logo-placeholder {
    width: 320px;
    height: 90px;
    border: 2px dashed #cbd5e1;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    background-color: #ffffff;
}

/* Encabezado General */
.encabezado-general {
    text-align: center;
    margin-bottom: 2rem;
}

.encabezado-general h1 {
    font-size: 1.55rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 0.35rem;
}

.encabezado-general p {
    font-size: 0.95rem;
    color: #475569;
}

/* Tarjeta Principal */
.tarjeta-formulario {
    background-color: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 2.25rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.titulo-formulario {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.subtitulo-formulario {
    font-size: 0.9rem;
    color: #475569;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 1.75rem;
}

/* Bloques Fieldset semánticos */
fieldset.grupo-formulario {
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    padding: 1.25rem;
    margin-bottom: 1.75rem;
}

legend {
    font-size: 0.92rem;
    font-weight: 600;
    color: #0f172a;
    padding: 0 0.5rem;
}

/* Campos y Etiquetas */
.campo {
    margin-bottom: 1rem;
}

.campo:last-child {
    margin-bottom: 0;
}

.campo label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: #334155;
    margin-bottom: 0.35rem;
}

.control-input {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-size: 0.9rem;
    color: #0f172a;
    background-color: #ffffff;
}

.control-input:focus {
    outline: none;
    border-color: #0284c7;
}

/* Grillas ordenadas */
.fila-dos {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.fila-tres {
    display: grid;
    grid-template-columns: 1.1fr 1fr 1.6fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

/* Cédula agrupada */
.grupo-cedula {
    display: flex;
    gap: 0.35rem;
}

.grupo-cedula select {
    width: 70px;
    flex-shrink: 0;
}

.grupo-cedula input {
    flex-grow: 1;
}

/* Ayudas y alertas */
.texto-ayuda {
    display: block;
    font-size: 0.8rem;
    color: #64748b;
    margin-top: 0.35rem;
}

.alerta {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    font-size: 0.88rem;
    margin-top: 1.25rem;
    display: none;
}

.alerta-exito {
    background-color: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #166534;
}

.alerta-error {
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

/* Botón principal */
.boton-enviar {
    width: 100%;
    background-color: #0f172a;
    color: #ffffff;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    padding: 0.75rem;
    cursor: pointer;
    margin-top: 1.5rem;
}

.boton-enviar:hover {
    background-color: #1e293b;
}

.boton-enviar:disabled {
    background-color: #94a3b8;
    cursor: not-allowed;
}

.pie-enlace {
    text-align: center;
    margin-top: 1.25rem;
    font-size: 0.85rem;
}

.pie-enlace a {
    color: #0284c7;
    text-decoration: none;
}

.pie-enlace a:hover {
    text-decoration: underline;
}

@media (max-width: 650px) {
    .tarjeta-formulario {
        padding: 1.5rem 1rem;
    }
    .fila-dos, .fila-tres {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
}